ES-CUTP and ES-FUTP Manual
Page 9
where
P
T
= Transmitter Output Power, and P
R
= Receiver Sensitivity
Worst case OPB = OPB - 1dB(for LED aging) - 1dB(for insertion loss)
Worst case distance = {Worst case OPB, in dB} / [Cable Loss, in dB/Km]
where the “Cable Loss” for 62.5/125 and 50/125
µ
m (m.m.) is 2.8 dB/km,
and the “Cable Loss” for 100/140 (Multi-mode) is 3.3 dB/km,
and the “Cable Loss” for 9/125 (Single-mode) is 0.5 dB/km
The following data has been collected from component manufacturer’s (HP’s and Siemens’) web sites
and catalogs to provide guidance to network designers and installers.
Fiber
Port
Module
Speed,
Std.
Std. km
fdx
(hdx)
Wave-
length
nm
Cable
Size
µ
m
X’mitr
Output
P
T ,
dB
R’cvr
Sens.
P
R ,
dB
Worst
OPB,
dB
Worst*
distance
Km, fdx
typical
OPB,
dB
typical*
distance
Km, fdx
ES-FUTP
MST,
MSC
100Mbps
FX
2
(0.4)
1300
multi-
mode
62.5/125
50/125
-20
-23.5
-31
-31
9.0
5.5
2.5
2.0
14
12
5
4
ES-FUTP
MTRJ
100Mbps
FX
2
(0.4)
1300
multi-
mode
62.5/125
50/125
-20
-23.5
-31
-31
9.0
5.5
3.0
2.0
15.8
12.2
5.5
4.0
* Not
e: The use of multi-mode fiber to operate at 100Mbps speed over long distances (i.e., over approx.
400 meters) can be achieved
only
if the following factors are both applied:
•
The 100Mb fiber segment must operate in full-duplex (FDX) mode, and
•
The worst-case OPB of the fiber link must be greater than the fiber cable’s passive
attenuation.
(Attenuation = cable loss + LED aging loss + insertion loss + safety factor)
3.2.6 Connections to NICs, which support Auto-Negotiation, RJ45 ports
The copper ports of the ES family of switches will function properly with NICs (Network Interface
Cards) which support auto-negotiation, and the Fast Link Pulse (FLP) coding for the 100BASE-TX
signaling system. When connecting a NIC to the ES-FUTP or ES-CUTP, it may be necessary to reload
the NIC drivers on the user device if the NIC has been communicating with a protocol other than
100BASE-TX (such as 10BASE-T). When 100Mbps operation is agreed and in use, the SPEED LED is
illuminated steady ON. It is OFF if there is no traffic or 10Mbps traffic.
3.3 Powering the ES-FUTP and ES-CUTP Switch
Each switch is provided with an external power supply and has a jack for the DC power cord in the
rear. A lightweight DC power cord for
5V, 2.0 amps
is supplied with each unit. The small DC power cord
from the power supply plugs into the matching rear power jack of the switches. When the power is
applied, the green PWR LED will illuminate.
Each power supply supports standard AC installation environments and comes in AC input power
of 115vac at 60Hz.
Examine the power supply to make sure the version you have is the right type for your AC power
system. The 115vac version has a small transformer integral with a convenience power outlet plug, and
a lightweight DC power cord to the applicable power jack on the switch.
4.0 OPERATION
- the Function and Operation of the ES-FUTP and ES-CUTP Switches.
4.1
Dual-Speed Functionality and Switching
The ES-FUTP and ES-CUTP switches provide eight switched ports, one of which may be
100Mbps fiber. The architecture supports a dual speed-switching environment, with a built-in full-duplex
“future-proof” fiber port on the ES-FUTP-8. The ES-CUTP-8 model has RJ45 connectors on all the ports
with auto-negotiation capability.
